Ancient DNA and the new science of Mammoths, Neanderthals and Your Ancestors
Environmental effects may even matter after excavation
#1
Ancient DNA (aDNA) is DNA isolated from ancient specimens. There is no definitive age to define historic or ancient DNA, but includes genetic material recovered from archaeological and historical skeletal material, mummified tissues, archival collections of non-frozen medical specimens, preserved plant remains, ice and permafrost cores as well as marine and lake sediments.

Due to degradation processes (including cross-linking, deamination and fragmentation) ancient DNA is of lower quality in comparison with modern genetic material. The damage characteristics and ability of aDNA to survive through time restricts possible analyses and places an upper limit on the age of successful samples Allentoft et al. (2012). There is a theoretical relationship between time and DNA degradation, although differences in environmental conditions complicates things. Samples subjected to different conditions are unlikely to predictably align to a uniform age-degradation relationship. The environmental effects may even matter after excavation, as DNA decay rates may increase, particularly under fluctuating storage conditions. Even under the best preservation conditions, there is an upper boundary of 0.4-1.5 million years for a sample at around to contain sufficient DNA for contemporary sequencing technologies.

https://en.wikipedia.org/wiki/Ancient_DNA
https://www.usnews.com/info/blogs/press-room/2015/06/29/the-us-news-raytheon-stem-index-shows-gender-and-racial-gaps-widening-in-stem-fields

You must realise that greatness related to power, position or wealth is transient. It is lost when power and position go. But goodness is respected always. Therefore dedicate your lives to goodness. What is goodness? It is living according to Dharma and justice, to love all and cherish faith in God, to help the needy and raise the lowly--all these constitute goodness.
                                                                                                                                                    Sri Sathya Sai Baba



Ancient DNA and the new science of the human past

https://www.youtube.com/watch?v=EfHGhWfxWoA&t=20s
Reply
Thanks given by:

#2
 DNA | Mammoths, Neanderthals, and Your Ancestors || Radcliffe Institute

       https://www.youtube.com/watch?v=pOj170kogg0   





𝐓𝐡𝐞 𝐏𝐥𝐞𝐢𝐚𝐝𝐢𝐚𝐧𝐬 - 𝐌𝐀𝐒𝐒𝐈𝐕𝐄 𝐁𝐑𝐄𝐀𝐊𝐈𝐍𝐆!! 𝟏𝟎𝟎𝟎 𝐒𝐡𝐢𝐩𝐬 𝐀𝐑𝐑𝐈𝐕𝐄𝐃 𝐢𝐧 𝐭𝐡𝐞 𝐍𝐢𝐠𝐡𝐭 𝐒𝐤𝐲! 𝐓𝐇𝐄𝐘'𝐑𝐄 𝐇𝐄𝐑𝐄 𝐍𝐎𝐖! 𝐃𝐨 𝐮 𝐬𝐞𝐞?




        https://youtu.be/51CLinEOoqQ
Reply
Thanks given by:



Possibly Related Threads…
Thread Author Replies Views Last Post
  Ancient Technology Discoveries in Egypt How Did This Exist Thousands of Years Ago!!Z Dee 2 2,241 2018-Oct-1-12:11 am
Last Post: Dee
  THE BEST ANCIENT PYRAMIDS [EGYPT] DOCUMENTARIES Dee 1 1,668 2018-Aug-20-9:40 am
Last Post: Dee
  Controversial Ancient Artifacts That Left Scientists Scratching their Heads in Amazem Dee 0 1,349 2018-Jan-24-11:57 pm
Last Post: Dee
  Ancient Technology So Advanced it Confused Scientists Throughout the World! Dee 0 1,696 2017-Dec-16-3:30 pm
Last Post: Dee
  Ancient Artifacts That Are Still Shrouded in Controversy Today Dee 0 1,227 2017-Oct-23-9:45 pm
Last Post: Dee
  Michael Tellinger Ancient Alien Sound Technology Dee 0 1,817 2017-Mar-31-6:56 pm
Last Post: Dee
  Innovation, Science and Economic Development Canada Dee 0 1,330 2017-Mar-22-10:41 pm
Last Post: Dee
  Ancient Advanced Stone Cutting technology Dee 0 1,293 2017-Mar-10-11:21 pm
Last Post: Dee
  CERN 2018 Alert - Anonymous: They Aren't Going to Tell You About This ~Science Circle Anonymous 0 1,355 2017-Jan-14-7:29 pm
Last Post: Anonymous



Users browsing this thread: 1 Guest(s)